Double-door mailbox



FIG. 1 is a top, front and right-side perspective view of a double-door mailbox showing my new design;

FIG. 2 is a top, front and right side perspective view, showing the doors in open position and the flag down;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a double-door mailbox, as shown and described. 